Gauge
An instrument for determining dimensions or capacity. The watchmaker cannot be too careful in the selection of his measuring instruments, as accuracy and perfection in watchmaking are essential elements to success. Accuracy is more essential than finish, though both are desirable; still a movement that is accurate may be a fine time-keeper, although it may be lacking in finish and not artistic to look upon. Measuring instruments of all kinds should be handled with care, and in the more delicate ones cleanliness also plays an important part. You cannot expect accurate results from a fine Vernier caliper that is recklessly thrown into a heap of other tools upon the bench. It should be carefully handled, and when you are through using it you should carefully wipe it and place it in some drawer in your bench, where it will not be mutilated by being jammed against other tools.